<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title></title>
<link rel="stylesheet" href="./css/base.css">
<script src="./js/codergege.js"></script>
<script src="./js/1.js"></script>
<style>
.active { background: red; }
#tab div { width: 200px; height: 200px; background: blue; border: 5px solid 
	green; border-radius: 5px; display: none; }
</style>
</head>
<body>
<div id="tab">
	<input type="button" value="1" class="active">
	<input type="button" value="2">
	<input type="button" value="3">
	<div style="display:block">001</div>
	<div>002</div>
	<div>003</div>
</div>

</body>
</html>
